The arrest of a 24-year-old illegal immigrant in the murder of University of Iowa student Mollie Tibbetts sparked both mournful â€” and fiery â€” responses from politicians on Tuesday, as they pleaded with Congress to do more to protect U.S. citizens.

President Trump exhorted West Virginia voters to back Republican Senate candidate Patrick Morrisey in November’s midterm elections Tuesday night, but avoided any mention of the legal troubles of his former campaign chairman and former personal attorney.